Wire cable end clamp



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L. ROBINSON WIRE CABLE END (JIWIP F1166. Feb 14 1935 L En um xm..

:LeZz'e Hazfza/z @atented Mar. 2, 1937 UNITED STATES PATE ada

Application February 14, 1935, Serial No. 6,604

4 Claims.

The invention relates to a clamping device for the ends of wire cables and has for its object the provision of means for engaging the coils of a wire cable and securely holding them to prevent separation and unraveling.

A further object of the invention is the provision of a clamping means for wire cables comprising a suitable head to engage the extremity of a cable and having a plurality of fingers extending therefrom that are substantially trianguiar in cross section to engage in the interstices between thecoils of the cable, said fingers having their outer surfaces provided with alined threads, and a 4clamping sleeve having a tapered bore threaded to engage the threads on the fingers and to hold them intimately engaged with the coils ofthe cable. The head may or may not be provided with a ring or loop for securing the'end of the cable to a suitable hook or other fastening means, and also providing means for threading the cable on the sheaves of pulleys.

The invention willbe described in detail hereinafter and .will be foundv illustrated in the accompanying drawing, in which:

Figure 1 is a view in elevation of the end fragment of a wire cable showing the improved clamp mounted thereon,

Figure 2 is a similar view at 90 degrees removed from the view of Figure 1;

Figure 3 is a view similar to Figure 1 showing the clamping sleeve in longitudinal section;

Figure 4 is a view of the clamp with the sleeve removed; and

Figure 5 is a transverse sectional view on a plane indicated by the line 5-5 of Figure 1. In the drawing, similar reference characters are used to designate corresponding parts in all of a plurality the views.

The end clamp is adapted to be secured to the end of a wire cable such as shown at Il), and made up of a plurality of sections II that are coiled on one another and usually constructed of strands of wire twisted or coiled on one another providing the separate coils II.

The invention is adapted to be secured to the end of the wire cable II) and consists of a head I2 having a plurality of fingers I3 that-are arranged in spaced relation around the periphery of the head I2 and extend spirally therefrom as shown in Figures 3 and 4. Each of said fingers I3 are substantially triangular in cross section as best shown in Figure 5, having two sides I4 arranged at an angle to one another to engage between the coils II, and said sides I4 are provided with a. plurality of parallel groves I5 to that are in turn receive and clamp the individual wires of the coils II, said wires being designated I6. The outer faces of the fingers I3 are provided with alined screw-threads I1, and I8 indicates a sleeve mounted on the fingers I3, and interiorly threaded as shown at I9,to engage the threads Il. The bore of the sleeve I8 towards the head I2 is slightly larger in diameter than the opposite end of the sleeve, 2l) designating the end of the sleeve having the larger bore, said bore being tapered to the end 2|. This structure is provided so as to expedite mounting the sleeve on the lingers, the fingers being pressed into intimate contact with the coils when the sleeve is screwed onto the lingers by engagement of the threads I'I and I9.

The head I2 is preferably provided with an integral ring or loop 22 to enable securing the cable end to a hook or other engaging member, not shown, and said ring or loop is also useful in easing the cable onto the sheave of a pulley and for other purposes.

What is claimed is:-

l. In a wire cable end clamp, a head, a plurality of individual fingers each substantially triangular in cross-section and arranged circumferentially on said head, each individual finger being spiral to engage in a single spiral groove between the outer coils of a cable, the cable engaging surfaces of said fingers being angular in cross sec-tion to engage between the outer coils of the cable, and a. sleeve engaging said fingers.

2. In a wire cable end clamp, a head, a plurality of individual fingers each substantially triangular in cross section and arranged circumferentially on said head, each individual finger being spiral to engage in a single spiral groove between the outer coils of a cable, and a sleeve in screw threaded engagement with said fingers.

3. In a wire cable end clamp, a head, a plurality of individual fingers each substantially triangular in cross section and ,arranged circumferentially of said head, each individual finger being spiral and having its inner surfaces curved to conform to the shape of the outer coils of a cable in a single groove thereof and said surfaces provided with grooves to receive the outer strands of said coils, and a sleeve screw threaded to said fingers.

4. A device as in claim 1, the outer surfaces of asaid fingers provided with alined threads, and a tubular sleeve engaging said fingers, the bore of said sleeve being tapered and threaded to engage said alined threads and hold the 1ingers in clamping engagement with the coils of the cable.

LESLIE ROBINSON. 

